78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*
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* This file is part of the Pico OpenPGP distribution (https://github.com/polhenarejos/pico-openpgp).
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* Copyright (c) 2022 Pol Henarejos.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "openpgp.h"
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#include "do.h"
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int cmd_internal_aut() {
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if (P1(apdu) != 0x00 || P2(apdu) != 0x00) {
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return SW_WRONG_P1P2();
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}
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if (!has_pw3 && !has_pw2) {
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return SW_SECURITY_STATUS_NOT_SATISFIED();
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}
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file_t *algo_ef = search_by_fid(algo_aut, NULL, SPECIFY_EF);
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if (!algo_ef) {
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return SW_REFERENCE_NOT_FOUND();
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}
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const uint8_t *algo = algorithm_attr_rsa2k + 1;
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if (algo_ef && algo_ef->data) {
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algo = file_get_data(algo_ef);
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}
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file_t *ef = search_by_fid(pk_aut, NULL, SPECIFY_EF);
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if (!ef) {
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return SW_REFERENCE_NOT_FOUND();
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}
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if (wait_button_pressed(EF_UIF_AUT) == true) {
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return SW_SECURE_MESSAGE_EXEC_ERROR();
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}
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int r = PICOKEY_OK;
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if (algo[0] == ALGO_RSA) {
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mbedtls_rsa_context ctx;
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mbedtls_rsa_init(&ctx);
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r = load_private_key_rsa(&ctx, ef, true);
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if (r != PICOKEY_OK) {
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mbedtls_rsa_free(&ctx);
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return SW_EXEC_ERROR();
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}
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size_t olen = 0;
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r = rsa_sign(&ctx, apdu.data, apdu.nc, res_APDU, &olen);
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mbedtls_rsa_free(&ctx);
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if (r != 0) {
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return SW_EXEC_ERROR();
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}
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res_APDU_size = olen;
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}
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else if (algo[0] == ALGO_ECDH || algo[0] == ALGO_ECDSA || algo[0] == ALGO_EDDSA) {
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mbedtls_ecp_keypair ctx;
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mbedtls_ecp_keypair_init(&ctx);
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r = load_private_key_ecdsa(&ctx, ef, true);
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if (r != PICOKEY_OK) {
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mbedtls_ecp_keypair_free(&ctx);
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return SW_EXEC_ERROR();
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}
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size_t olen = 0;
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r = ecdsa_sign(&ctx, apdu.data, apdu.nc, res_APDU, &olen);
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mbedtls_ecp_keypair_free(&ctx);
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if (r != 0) {
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return SW_EXEC_ERROR();
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}
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res_APDU_size = olen;
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}
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return SW_OK();
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}
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